SW1X Audio Design™ MPA I Neptune
Performance Level 2/3
6V6 Valve Push Pull Mono Power Amplifier
MPA I Neptune is a Pure Class A, Zero Negative Feedback, Fully Valve Rectified, Push Pull, 3 Gain Stage, Mono Power Amplifier.
The powerful & grungy character of the triode connected 6V6G output tubes in combination with 6SJ7 and 6SN7 input and driver tubes offer the articulate presentation with a powerful & full bodied sound.
Combined with the finest Materials & Components, MPA I is refined & musical sounding, especially when combined with higher sensitivity speakers.
(91-93dB/W/1m sensitivty is recommended).
SW1X Audio Design™ MPA I Neptune Mono Power Amplifier Features:
- Specially Selected and Harmonically Matched Component & Material Quality
- Push Pull, Zero NFB, Class A, Valve Power Amplifier
- 6SJ7 input Stage, 6SN7 phase inveter tubes driving the triode connected 6V6 Valves
- Hybrid Point 2 Point Hardwiring Technique for the most consistent production results
- Internally wired exclusively with our SW1X Magnum, Genesis and Opus conductors
- SW1X Audio Design™ Custom Designed Copper wound (50 Watt Core) Signal Output Transformers
- Mono, Directly Heated Double Diode Valve Rectified B+ Power Supply
- Orient grain M6 EI core mains Transformers & Chokes
- Fixed Bias Power Supply
Tube Compliment: 2 x 6SJ7, 2 x 6SN7, 4 x 6V6G, 2 x 5U4G
MPA I Neptune is avaiable in 2 Versions with following output transformer (OPTs) specifications:
- Standard : SW1X Audio Design™ all Copper wound, orient grain M6 EI Core OPTs
- Special : SW1X Audio Design™ all Copper wound Super HiB DC Core OPTs
Note: Due to SW1X Audio Design’s ongoing research and development process, specifications are subject to change without notice
Specifications
Push Pull, Class A, Zero NFB, Output Power (W): 9, which sound at least like 90 Watts and the dynamic delivery feel like 600 W
when paired with with High Sensitivity Speakers (93dB/W/1m is recommended)
Input Sensitivity (V): 1
Input Impedance (Ohms): 47K or 100K
Output Impedance (Ohms): 4 & 8
Max Power Consumption (W): 200
Output Noise, Unweighted (mVrms): < 0.5
Dimensions (without tubes and feet): Height (mm) 200 x Width (mm) 250 x Depth (mm) 440
Weight (kg): 40 (pair)
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